A Comparative Study of Zn(O,S) Buffer Layers and CIGS Solar Cells Fabricated by CBD, ALD, and Sputtering

Kannan Ramanathan, Jonathan Mann, Stephen Glynn, Steve Christensen, Joel Pankow, Jian Li, John Scharf, Lorelle Mansfield, Miguel Contreras, Rommel Noufi

Research output: Contribution to conferencePaperpeer-review

43 Scopus Citations

Abstract

Zn(O,S) thin films were deposited by chemical bath deposition (CBD), atomic layer deposition, and sputtering. Composition of the films and band gap were measured and found to follow the trends described in the literature. CBD Zn(O,S) parameters were optimized and resulted in an 18.5% efficiency cell that did not require post annealing, light soaking, or an undoped ZnO layer. Promising results were obtained with sputtering. A 13% efficiency cell was obtained for a Zn(O,S) emitter layer deposited with 0.5%O2. With further optimization of process parameters and an analysis of the loss mechanisms, it should be possible to increase the efficiency.

Original languageAmerican English
Pages1677-1680
Number of pages4
DOIs
StatePublished - 2012
Event38th IEEE Photovoltaic Specialists Conference, PVSC 2012 - Austin, TX, United States
Duration: 3 Jun 20128 Jun 2012

Conference

Conference38th IEEE Photovoltaic Specialists Conference, PVSC 2012
Country/TerritoryUnited States
CityAustin, TX
Period3/06/128/06/12

Bibliographical note

See CP-5200-54138 for preprint

NREL Publication Number

  • NREL/CP-5200-56915

Keywords

  • Buffer layers
  • copper indium gallium diselenide
  • thin film solar cells
  • wide bad gap emitters
  • zinc oxysulfide

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